/* 结构化讨论树状图样式 */
#discussion-tree-container {
  overflow-x: auto;
  min-height: 80px;
  padding: 24px 8px 16px 8px;
  background: #f8fafc;
  border-radius: 12px;
  box-shadow: 0 2px 8px 0 rgba(0,0,0,0.03);
}
.tree-visual-node {
  display: inline-block;
  min-width: 110px;
  max-width: 200px;
  padding: 14px 16px 10px 16px;
  border-radius: 16px;
  border: 2.5px solid #e5e7eb;
  background: #fff;
  font-size: 14px;
  margin: 0 16px 32px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  box-shadow: 0 2px 8px 0 rgba(0,0,0,0.06);
  position: relative;
}
.tree-visual-node .font-bold {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}
.tree-visual-node .truncate {
  color: #64748b;
  font-size: 13px;
}
.tree-visual-node.selected {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px #2563eb33;
  background: #e0edff;
}
.tree-visual-node:hover {
  box-shadow: 0 4px 16px 0 rgba(37,99,235,0.10);
  border-color: #60a5fa;
  background: #f1f5fd;
}
/* 父子连接线：竖线 */
.tree-visual-node:not(:only-child)::after {
  content: '';
  position: absolute;
  top: -24px;
  left: 50%;
  width: 2px;
  height: 24px;
  background: #dbeafe;
  transform: translateX(-50%);
  z-index: 0;
}
.node-children-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  margin-top: 24px;
  min-width: 220px;
  gap: 24px;
  position: relative;
}
/* 子节点水平线 */
.node-children-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: #dbeafe;
  z-index: 0;
}
.tree-visual-node[data-tag="支持"] {
  border-color: #22c55e;
  background: #f0fdf4;
}
.tree-visual-node[data-tag="反对"] {
  border-color: #ef4444;
  background: #fef2f2;
}
.tree-visual-node[data-tag="提问"] {
  border-color: #eab308;
  background: #fefce8;
}
.tree-visual-node[data-tag="建议"] {
  border-color: #3b82f6;
  background: #eff6ff;
}
.tree-visual-node[data-tag="澄清"] {
  border-color: #6366f1;
  background: #eef2ff;
}
.tree-visual-node[data-tag="补充信息"] {
  border-color: #a21caf;
  background: #f3e8ff;
}
.tree-visual-node[data-tag="担忧"] {
  border-color: #ec4899;
  background: #fdf2f8;
}
.tree-visual-node[data-tag="中立/观察"] {
  border-color: #6b7280;
  background: #f3f4f6;
}
/* 连接线可用伪元素或后续补充 SVG/CSS 方案 */ 

@media (max-width: 480px) {
  #discussion-tree-container {
    padding: 12px 2px 8px 2px;
    min-height: 40px;
  }
  .tree-visual-node {
    min-width: 80px;
    max-width: 120px;
    font-size: 12px;
    padding: 8px 6px 6px 6px;
    margin: 0 6px 18px 6px;
    border-radius: 10px;
  }
  .tree-visual-node .font-bold {
    font-size: 13px;
  }
  .tree-visual-node .truncate {
    font-size: 11px;
  }
  .node-children-container {
    gap: 8px;
    min-width: 120px;
    margin-top: 12px;
    flex-wrap: wrap; /* 允许自动换行 */
  }
}